# Relationship history for MSHA mine 1508515

Current hierarchy: **Susie A  Smith; Elmer  Fuller → Kyn Coal Company Inc → Mine No 2-K**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Hope Mining Company → Mine No 2-K; 1975-07-01 to 1996-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Clevenger Leon-Paul & Jerry--Arthur Epling → Mine No 2-K; 1975-07-01 to 1996-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Clevenger Leon-Paul & Jerry--Arthur Epling → Hope Mining Company; 1975-07-01 to 1996-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Elmer  Fuller et al → Mine No 2-K; 1979-10-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kyn Coal Company Inc → Mine No 2-K; 1996-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elmer  Fuller et al → Kyn Coal Company Inc; 1996-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Susie A  Smith et al → Kyn Coal Company Inc; 1996-09-12 to current/open; source msha-controller-operator-history